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Nutritional Epigenetic Programming and Embryo-Maternal Signaling in Sheep and Cattle
Nutritional Epigenetic Programming and Embryo-Maternal Signaling in Sheep and Cattle
Nutritional Epigenetic Programming and Embryo-Maternal Signaling in Sheep and Cattle

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20260202103530
ISBN  
9798314894682
DDC  
636
저자명  
Graybeal, Jessica Ellen-Townsend.
서명/저자  
Nutritional Epigenetic Programming and Embryo-Maternal Signaling in Sheep and Cattle
발행사항  
[Sl] : The University of Wisconsin - Madison, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
265 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-11, Section: B.
주기사항  
Advisor: Khatib, Hasan.
학위논문주기  
Thesis (Ph.D.)--The University of Wisconsin - Madison, 2025.
초록/해제  
요약This dissertation explores the impact of dietary factors on gene expression, epigenetic modifications, and fetal programming in livestock. Through a series of interrelated studies, this research investigates the influence of paternal and maternal nutrition on sperm, seminal plasma, oocytes, and embryos, as well as a separate study on extracellular vesicle communication. The first main chapter examines how a prepubertal methionine-enriched paternal diet affects sperm DNA methylation and its subsequent influence on embryo gene expression in sheep. We identified 166 differentially methylated cytosines (DMCs) in the sperm of treatment versus control rams, with correlations between seven DMCs and altered gene expression in embryos. These findings suggest that sperm methylation changes induced by diet may play a role in fetal programming through inheritance of epigenetic marks to the embryo, thereby affecting gene expression. The second chapter extends this investigation by analyzing the impact of paternal diet on the proteome and miRNA composition of seminal plasma (SP). We found that a methionine-enriched diet altered the abundance of 60 proteins and 138 miRNAs in SP, many of which are associated with reproduction and embryo development. These results highlight the potential role of SP components in modulating male fertility and contributing to fetal programming. The third chapter explores the effects of maternal methionine supplementation on oocyte and embryo DNA methylation in mature ewes. Using whole genome bisulfite sequencing, we identified 2,056 DMCs in oocytes and 113 DMCs in embryos. Additionally, mitochondrial DNA methylation analysis revealed 17 DMCs in oocytes and 22 DMCs in embryos. These findings demonstrate that maternal diet influences epigenetic modifications in both nuclear and mitochondrial DNA, potentially impacting embryo development and long-term offspring health. The final chapter investigates extracellular vesicle (EV) communication between embryos and the endometrium in a bovine model. We identified three full-length mRNA transcripts in EVs secreted by in-vitro produced bovine embryos. We chose to further investigate the role of one transcript, DPPA3, because of its well-known functions in embryonic development. This study revealed that DPPA3 modulates endometrial genes, including well-known pregnancy-related genes such as interferon stimulated genes, and affects their protein levels. These findings suggest a potential role for DPPA3 in embryo-maternal communication and early pregnancy establishment. Together, this dissertation provides novel insights into the mechanisms by which paternal and maternal diets influence gene expression and epigenetic modifications, contributing to fetal programming. Additionally, it highlights a distinct role for extracellular vesicles in embryo-maternal communication. These findings enhance our understanding of how parental nutrition shapes early development and may inform strategies for optimizing livestock management and improving reproductive efficiency.
일반주제명  
Animal sciences
일반주제명  
Genetics
일반주제명  
Nutrition
키워드  
DNA methylation
키워드  
Embryos
키워드  
Epigenetics
키워드  
Extracellular vesicles
키워드  
Differentially methylated cytosines
키워드  
Seminal plasma
기타저자  
The University of Wisconsin - Madison Animal and Dairy Sciences
기본자료저록  
Dissertations Abstracts International. 86-11B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

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■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a636
■1001  ▼aGraybeal,  Jessica  Ellen-Townsend.
■24510▼aNutritional  Epigenetic  Programming  and  Embryo-Maternal  Signaling  in  Sheep  and  Cattle
■260    ▼a[Sl]▼bThe  University  of  Wisconsin  -  Madison▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a265  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-11,  Section:  B.
■500    ▼aAdvisor:  Khatib,  Hasan.
■5021  ▼aThesis  (Ph.D.)--The  University  of  Wisconsin  -  Madison,  2025.
■520    ▼aThis  dissertation  explores  the  impact  of  dietary  factors  on  gene  expression,  epigenetic  modifications,  and  fetal  programming  in  livestock.  Through  a  series  of  interrelated  studies,  this  research  investigates  the  influence  of  paternal  and  maternal  nutrition  on  sperm,  seminal  plasma,  oocytes,  and  embryos,  as  well  as  a  separate  study  on  extracellular  vesicle  communication.  The  first  main  chapter  examines  how  a  prepubertal  methionine-enriched  paternal  diet  affects  sperm  DNA  methylation  and  its  subsequent  influence  on  embryo  gene  expression  in  sheep.  We  identified  166  differentially  methylated  cytosines  (DMCs)  in  the  sperm  of  treatment  versus  control  rams,  with  correlations  between  seven  DMCs  and  altered  gene  expression  in  embryos.  These  findings  suggest  that  sperm  methylation  changes  induced  by  diet  may  play  a  role  in  fetal  programming  through  inheritance  of  epigenetic  marks  to  the  embryo,  thereby  affecting  gene  expression.  The  second  chapter  extends  this  investigation  by  analyzing  the  impact  of  paternal  diet  on  the  proteome  and  miRNA  composition  of  seminal  plasma  (SP).  We  found  that  a  methionine-enriched  diet  altered  the  abundance  of  60  proteins  and  138  miRNAs  in  SP,  many  of  which  are  associated  with  reproduction  and  embryo  development.  These  results  highlight  the  potential  role  of  SP  components  in  modulating  male  fertility  and  contributing  to  fetal  programming.  The  third  chapter  explores  the  effects  of  maternal  methionine  supplementation  on  oocyte  and  embryo  DNA  methylation  in  mature  ewes.  Using  whole  genome  bisulfite  sequencing,  we  identified  2,056  DMCs  in  oocytes  and  113  DMCs  in  embryos.  Additionally,  mitochondrial  DNA  methylation  analysis  revealed  17  DMCs  in  oocytes  and  22  DMCs  in  embryos.  These  findings  demonstrate  that  maternal  diet  influences  epigenetic  modifications  in  both  nuclear  and  mitochondrial  DNA,  potentially  impacting  embryo  development  and  long-term  offspring  health.  The  final  chapter  investigates  extracellular  vesicle  (EV)  communication  between  embryos  and  the  endometrium  in  a  bovine  model.  We  identified  three  full-length  mRNA  transcripts  in  EVs  secreted  by  in-vitro  produced  bovine  embryos.  We  chose  to  further  investigate  the  role  of  one  transcript,  DPPA3,  because  of  its  well-known  functions  in  embryonic  development.  This  study  revealed  that  DPPA3  modulates  endometrial  genes,  including  well-known  pregnancy-related  genes  such  as  interferon  stimulated  genes,  and  affects  their  protein  levels.  These  findings  suggest  a  potential  role  for  DPPA3  in  embryo-maternal  communication  and  early  pregnancy  establishment.  Together,  this  dissertation  provides  novel  insights  into  the  mechanisms  by  which  paternal  and  maternal  diets  influence  gene  expression  and  epigenetic  modifications,  contributing  to  fetal  programming.  Additionally,  it  highlights  a  distinct  role  for  extracellular  vesicles  in  embryo-maternal  communication.  These  findings  enhance  our  understanding  of  how  parental  nutrition  shapes  early  development  and  may  inform  strategies  for  optimizing  livestock  management  and  improving  reproductive  efficiency.
■590    ▼aSchool  code:  0262.
■650  4▼aAnimal  sciences
■650  4▼aGenetics
■650  4▼aNutrition
■653    ▼aDNA  methylation
■653    ▼aEmbryos
■653    ▼aEpigenetics
■653    ▼aExtracellular  vesicles
■653    ▼aDifferentially  methylated  cytosines
■653    ▼aSeminal  plasma
■690    ▼a0475
■690    ▼a0369
■690    ▼a0570
■71020▼aThe  University  of  Wisconsin  -  Madison▼bAnimal  and  Dairy  Sciences.
■7730  ▼tDissertations  Abstracts  International▼g86-11B.
■790    ▼a0262
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357567▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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